Ball-bearing.



E. SACHS.

BALL BEARING.

APPLICATION FILED APR. 17, 1907.

926,771. Patented July 6, 1909.

Witnssses= inventor entree srarss r trnsr orrror.

ERNST SACHS, OF SOHWEINFURT, GERMANY.

BALL-BEARING. I

To all whom 'it may concern:

Be it known that l, ERNST SACHS, a subject of the King of Bavaria, residing at No. 5 Schultes street, Schweinl'urt, in Germany, have invented new and useful Improvements in Ball lfiearings, of which the following is a specification.

This invention relates to ball bearings consisting of concentric rings with circumferem tial grooves in the confronting peripheries, being the race-ways for the balls inserted between them, and the special object of the in vention is to provide a passage which permits of the easy and ready introduction of the balls between the bearing rings. To this end a groove of z'trcshaped i-ross-se('tion, similar to therace-ways, is formed in a lateral shoulder or flange of one of the rings, which groove is oblique or at an angle to the raceway, so that it resembles a concave thread of screw of a small pitch, extending over about one third to one hall' of the periphery of the said ring. By this means the assembling of the bearing is enabled by screwing the notched ring into the other containing all balls placed closely together, the series of the same being interrupted at one place alone. \Vith this construction the second ring of the bearing does not require any passage. arrangement is illustrated in the accompai'iying drawing which forms a part of this specification.

Figure 1 is a partial cross section ol'the bearing. Fig. 3 is a side elevation of the complete bearing. Fig. 2% represents the carts in the position ready for ell'ecting their inter-junction. Fig. 4 is a side elevation of the outer bearing ring with some of the balls placed therein.

The bearing comprises the two undivided rings (L and b of steel provided in theconl'routing peripheries with the usual concave race ways receiving the balls f. A groove 0, in its form similar to the race ways, is worked into the one lateral shoulder or flange of one of the said rings, for example in the ring I), as illustrated in. the drawing. This groove is directed to the race way in such a manner that they gradually pass or merge into each other, the one being continued by the other, so that the balls being collected in an uninterrupted series can ein the passage 0 and then into the race wa This passage orel'eraloly has the foranot' a thread ol a screw having a small pitch, the pitch being conveniently the sma ler the larger the number of the balls to Specification of Letters Patent.

Application filed April 17', 1907.

The

Patented July 6, 1909.

Serial N0. 368,756.

be inserted into the bearing. instead of as a screw thread, the passage 0 may be constructed on another regular or irregular curve which allows the balls to enter the race way the one directly behind the other.

The assemblage is enabled by reason of the Fact that in assembling all balls ol a mounted bearing in close contact with each other, leaving a single but comparativelv large interruption at one place, some slight dead motion of the balls in the axial direction is allowed, which permits the inner ring I) to be brought into an inclined position with respect to the outer ring, and to be rotated along the balls which are sliding in the passage c, the said ring thus being moved into the outer ring by a screwing motion. As soon as the lirst ball lying aside the abovo mentioned interstice has ntered the passage 0, the dead motion above referred to is at once 'considcrably magnified, and so on with the following balls entering the passage.

The elements of the hearing are assembled by first filling the outer ring (L with the required number of balls, placing the same in the race way in series, as shown in Fig. 4, then inserting the inner ring I) in an inclined position and in such a manner that the outer end of the passage 0 is in contact with the lil'st ballf ol the row. as illustrated in Fig. 3. When the ring I) is rotated in the direction ol' the arrow it moves with its passage c over all the balls, gradually receiving the same in the race way and thereby obtaining the position shown ll] Fig. l. The balls are now distributed in thr healing and equidistantly secured by a spacer of any suitable construction (rcprcsvnled in section in Fig. 2). This nutnipulation will be still further Facilitated it the passage 0 is not only oblique to the race way, but also gradually varies in its distance from the axis ol' the bearing, that is to say, if it is constructed on a conical spiral line or with eccentricity with respect to the ring, which arrangement is disclosed by Fig. 2 for example. in a passage. of this kind the dead motion in axial direction is assisted by an additional dead mot in in radial direc tion for facilitating thd screwing ol the rings a and I) into or out olcach other. Obviously the described passage may be provided in the outer ring, instead of the inner ring.

it is not an indispensible condition that the ntssage c should have just the same depth as the race way, the bottom ot which may not be reached by the passage. ln such LOO an arrangement the last balls of the series will not pass throu h the interstice between the passage and t e other ring; therefore some ressure must be applied to the construction, when the balls Wlll spring into the race ways, thereby profiting by the resiliency of the material of t 1e rings.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A ball-bearing comprising concentric rings with confronting annular ball-races and an interposed series of balls, one ring havin a roove or passage running laterally of am oh i( no to its race-way in such manner that the bearing can be assembled by screwing said ring into place while the series of balls are collected in the race-way of the other ring.

2. A ball-bearing comprising concentric inner and outer rings with confronting annular ball-races and an interposed series of balls, one of the rings having a lateral passage for introducin the balls, said passage running a relatively fimg distance circumferentially of the ring in the form of a screw-thread of small pitch and merging into the race-way in said ring, in such manner that the ring can be screwed into place.

3. A ballcaring comprising concentric rings having opposed annular grooves in their confronting peripheries constituting raceways for an interposed series of balls, one ring having in one of its lateral shoulders a relatively long groove extending peripherally from the outer face of the ring oblique to the race-way at a small acute angle and gradu-- ally merging into the latter, whereby the .gle and constructed on a conical spiral line and gradually merging'into the race-way, whereby said ring can be screwed into the other ring containing the balls.

In testimony whereof I haveset my signature to this specification in the presence of two subscribing witnesses.

ERNST SACHS. [L. 5.]

Witnesses i E. "BARDEL, A. LURZL. 

